Tri Zinger project questions??

[sleek122]

O.K. I just picked up a tri zinger and have a few questions on what I have read here on the board. I am going to use this as a camp cruiser/pitbike for myself. I stole this thing off of craigs list for $50 and it runs just wasn't taken care of the best.

The carb leaks and needs to be cleaned and rebuilt. I read that you can put a PW 80 carb on it. My question is will it bolt right on or do I have to modify the intake to make it fit? Also is the jetting going to be close from the PW 80 carb or will I need to jet it close to what the original carb is jetted to? I have a UNI pod filter on it now and I plan on putting the DG pipe and Boyesen reeds on so I figure it will have to be jetted anywhay.

I ordered the PW 50 racing clutch springs and when I install them should I rough up the clutch basket and the clutch disks or will that make them worse? I have done this on a 225DX that the clutch was slipping on and it worked well, just want to get some opinions on this.

I took off the oil injection and I am pre-mixing the gas and I want to get rid of the oil pump and fabricate a cover plate and change the cable to a single carb cable. I am also wanting to go with the 5/8" bars, the PW80 has seperate clamps and bars that might work, are they 5/8" bars? If I go this way is there anyway to bypass the start feature or will I have to keep the stock start stop run switch?

Sorry for all the questions but I have not found the answers by searching. Hope some of you zinger guru's can help. I think this is going to be a fun little project over the summer. And so far what I have seen this is a great site to have stumbled upon.

Later,
Al

[Vealmonkey]

You can't install a pw80 carb without lots of mods. Even if you mod the intake, the reed vavles are way small so some fab work will be necessary.
Also, the clutch has no discs, just 3 "feet", you will see when you get the side cover off. Also there is only one speed, no shifting.
For the oil pump, I had to disassemble the oil pump and plug the resulting hole or empty area with jb weld and reinstall after the jb weld was well cured. You can use a throttle cable off a yamaha moped, can't remember the model name, to eliminate the oil pump cable. The modded reed valve is the hardest and try using the reeds off the pw80 if you're using the pw80 carb and look into using electric conduit for the intake. You can go crazier if you want. The next big hurdle is the rear gearing, which also will have to be robbed from the same yamaha moped! This is a little more involved and having a friend that is a machinist or knowing a good machine shop is necessary unless you have a press in your garage. With a lot of imagination and a good tig welder there are alot of other tricks too, but it's alot of trial and error, but after the gearing your next step is overboring or cylinder and head swap!!!!

[sleek122]

Vealmonkey,
So the PW80 carb just flows too much for the reeds and the intake? Do you have any pictures of a modded intake and reed cage? I was hoping that the 80 carb would just bolt on to the intake and rejet but oh well. Is there a carb that will just bolt on and go besides jetting? I know it has the centrifical clutch but just couldn't think of the word "feet". Is there only two springs for the 3 feet or do I need to get another set of clutch springs? I don't want to have to mod a lot of stuff but I am curious what has to be done to the intake and reed cage. I do have a buddy that is a machinest so that part is covered but I don't know if I will have the time to do alot to this now but who knows in the future. So you can't just take off the oil pump and make a cover for where it bolts to the engine? I have not looked at it close enough to know. Would the throttle cable off of the PW 50 or 80 work? If not which end would have to be modified? I am thinking of putting different bars on it and mabey even a twist throttle.

Does anyone know if they make the aluminum wheels for these things? And what is the bolt pattern? 3 on what?

Thanks for the replies and keep them coming!

[Vealmonkey]

There is no carb that just bolts on and goes on a pw50 or yt60. You need to have a used reed assembly from the 80 and have your machinist friend cut out the reed assembly in the 80 and machine away that same are in the yt60 and mate the 2 together and tig together. From there you have to cut the intake tube of the yt60. Where you cut the tube will depend on if you have the pw80 carb and all its' bits and you don't want any restrictions on the intake tube. Once you figure out what conduit size works, then just modify and tig accordingly. This will wake the engine up pretty good, and the jetting just might work as it is. It's not major modding, but takes a little know how and patience, but worth it in the end. I'm pretty sure the pw50 heavy duty springs have 3 springs, just like the yt60, same clutch assembly I'm pretty sure too so that shouldn't be a problem. Once you modify your reeds and intake a nice porting job will help alot. There were at one time stroker kits for the yt60, but they are extremely rare nowadays. I can't imagine how many people bought and destroyed and then just threw away perfectly good stroker cranks and rods in yt60s' without even knowing it. Then like I said, your next best mod is to get the gear from the old yamaha moped and change the gear out on your yt60. It's just a matter of careful disassembly, pressing the gears off and then pressing the new gear back on. At this point, you will have different gears with different wear patterns so it will seem a little noisy at first, but hardly noticeable with the dg pipe! Next step is sourcing overbore pisons. There were at one time some bigbore pistons available, but haven't seen any in a long while. Also, you may want to shave the bottom of your head to up your compression some. If you really want to go bigger, and you can, you will have to look at swapping cylinders and heads. It can be done and it was. Then you can run some really wild carbs with the reeds in the cylinder instead of the engine case and you will have to block the intake on your engine case and then you really start having fun. I have seen yts' with engines larger than 125ccs!!! Heck, one of these days I might even bring frankenstein out of the attic. An old school freakishly modified yt60 that ran on alcohol. So believe me, modding a yt60 is possible and they are still out there, just very few. Have fun. Get modding and amaze your friends!!!!!

[thefox]

The moped Vealmonkey is talking about is a QT50.

[Vealmonkey]

Thanks Fox, it's been awhile since I messed with one of those mopeds. At least they were good for something!

[thefox]

Thanks Fox, it's been awhile since I messed with one of those mopeds. At least they were good for something!

lol, I bought a QT my sophomre year of college. Every time I rode it I couldn't help but laught at myself :lol: , it was a great 'ped (I have owned a few mopeds/scooters through the years).

[Bryan Raffa]

I made these out of a set of old CF reeds.. I just need a (NEW) Carb!!!!:naughty:

[sleek122]

The clutch springs I got only have two springs so I think I will have to buy another set or try to get a single spring.

Vealmonkey,
I think I know what you are talking about but I will have to look at the zinger to put it all together in my head. Thanks again for the reply and I will probably have some more q's when I start into this if I attempt to do it.

Bryan,
Is that the stock 60 cage or is this a modded one?

[Vealmonkey]

Sleek, I was trying to remember some things and I dug out my zinger shop manual and I gave you some bum info. There's only 2 feet on the zinger clutch, not 3 ! I apologize for that. Too many hondas. The 2 springs should be good for you. That's how long it's been since I've messed with a zinger. So if you have any technical questions, I have the zinger shop manual for the stock stuff anyway.

[sleek122]

That is good to know that I got the right springs. I will let you know if I have any questions that might need the manual.

[Bryan Raffa]

thats a stock cage ..with the stops cut off, I may open the holes a little more..

[bushwacker51]

I put a dg pipe and pod air cleaner on my tri zinger and it really leaned it out. I also put the pw 50 springs on my zinger. It makes it rev up a bit before the clutch ingages. It gives you a great hole shot. I must say of all the modifications done to my zinger the dg pipe made the most difference. It really woke it up. I also bent a axle on the tri zinger and bought a used ring and pinion off of ebay. The ring gear was junk and I tried to press the ring off the axle with my press. I heated it up with a torch and begain to put pressure on the axle and the axle bent at the top at the smallest part of the axle. I had no luck changing gears on my zinger lol. Good luck Glenn O.

[sleek122]

I noticed when I put new tires on that the right side hub is welded on, is this factory or did someone weld this on for some reason? :wondering

[Vealmonkey]

no, somebody welded it on, not good.

[sleek122]

Does that mean that I have to cut it off to get the axle off?

[riverrat]

I made these out of a set of old CF reeds.. I just need a (NEW) Carb!!!!:naughty:

Sorry for digging up an old thread.

Bryan, were these on the tri-zinger you let my son ride? I got the twin to it. Same color. You got a DG pipe on yours also?